Kohler 1400976-2-A Installation Instructions Manual page 17

9. Set the Sensor Range
NOTE: The default sensor distance is 2-3/4" (70 mm) +/- 3/8" (10 mm).
Press and hold the sensor range button for 2 seconds until the sensor flashes red.
NOTE: The sensor range is 1" (25 mm) – 4" (102 mm).
Hold an object at the desired distance in front of the sensor.
The light will flash red to signal that the sensor range adjustment is complete.
Kohler Co.
Sensor Range
Button
Priming
Button
17
Spout
Sensor
Flash
1400976-2-A